/* ===========================================================
   江苏大松机械有限公司 · 官网首页样式
   设计：高端深色 + 品牌红 + 钢银灰，慢动画，编辑式留白
   =========================================================== */

:root {
 --bg:#ffffff;
 --bg-alt:#f5f5f7;
 --bg-dark:#0c0c0e;
 --bg-dark-2:#141418;
 --bg-dark-3:#1c1c22;
 --text:#16161a;
 --text-mut:#6a6a72;
 --text-mut-2:#9a9aa2;
 --text-light:#f4f4f6;
 --text-light-mut:#a8a8b0;
 --accent:#b80000;
 --accent-2:#d4121f;
 --accent-soft:rgba(184,0,0,.08);
 --line:#e6e6ea;
 --line-dark:#2a2a30;
 --steel:#8c8c94;
 --maxw:80%;
 --ease:cubic-bezier(.4, 0, .2, 1);
 --ease-out:cubic-bezier(.16, 1, .3, 1);
 --serif:Georgia, 'Times New Roman', 'Songti SC', 'SimSun', serif;
 --sans:-apple-system, BlinkMacSystemFont, 'Microsoft YaHei', 'PingFang SC', 'Hiragino Sans GB', 'Helvetica Neue', Arial, sans-serif;
}
* {
	margin: 0;
	padding: 0;
	box-sizing: border-box
}
html {
	scroll-behavior: smooth
}
body {
	font-family: var(--sans);
	color: var(--text);
	background: var(--bg);
	line-height: 1.7;
	font-size: 15px;
	-webkit-font-smoothing: antialiased;
	overflow-x: hidden;
}
a {
	color: inherit;
	text-decoration: none;
	transition: color .4s var(--ease)
}
img {
	display: block;
	max-width: 100%
}
button {
	font-family: inherit;
	cursor: pointer;
	border: none;
	background: none;
	color: inherit
}
svg {
	width: 100%;
	height: 100%;
	display: block
}
em {
	font-style: normal
}
.container {
	width: 100%;
	max-width: var(--maxw);
	margin: 0 auto;
	padding: 0 40px
}
/* ===== 通用按钮 ===== */
.btn {
	position: relative;
	display: inline-flex;
	align-items: center;
	gap: 10px;
	padding: 16px 34px;
	font-size: 14px;
	font-weight: 500;
	letter-spacing: .04em;
	border: 1px solid var(--accent);
	border-radius: 2px;
	transition: all .6s var(--ease);
	overflow: hidden;
}
.btn--primary {
	background: var(--accent);
	color: #fff
}
.btn--primary .btn__arr {
	transition: transform .5s var(--ease)
}
.btn--primary:hover {
	background: #fff;
	color: var(--accent);
	border-color: var(--accent)
}
.btn--primary:hover .btn__arr {
	transform: translateX(6px)
}
.btn--ghost {
/* background: transparent;
	border-color: rgba(255,255,255,.5);
	color: #fff */
}
.btn--ghost:hover {
	/* background: #fff;
	color: var(--text);
	border-color: #fff */
	background: var(--accent);
	color: #fff;
}
.btn--block {
	width: 100%;
	justify-content: center
}
/* ===== 顶部信息条 ===== */
.topbar {
	background: var(--bg-dark);
	color: var(--text-light-mut);
	font-size: 12.5px;
	border-bottom: 1px solid var(--line-dark);
}
.topbar__inner {
	display: flex;
	align-items: center;
	justify-content: space-between;
	height: 38px
}
.topbar__left {
	display: flex;
	align-items: center;
	gap: 28px
}
.topbar__item {
	display: inline-flex;
	align-items: center;
	gap: 7px
}
.topbar__item .ico {
	width: 14px;
	height: 14px;
	opacity: .7
}
.topbar__right {
	display: flex;
	align-items: center;
	gap: 18px
}
.topbar__phone {
	display: inline-flex;
	align-items: center;
	gap: 7px;
	color: #fff;
	font-weight: bold;
	font-size: 16px;
}
.topbar__phone .ico {
	width: 14px;
	height: 14px;
	color: var(--accent-2)
}
.topbar__phone:hover {
	color: var(--accent-2)
}
.topbar__divider {
	width: 1px;
	height: 13px;
	background: var(--line-dark)
}
.topbar__lang {
	letter-spacing: .1em
}
/* ===== 头部导航 ===== */
.header {
	position: sticky;
	top: -1px;
	z-index: 200;
	background: rgba(255,255,255,.92);
	backdrop-filter: blur(14px);
	border-bottom: 1px solid var(--line);
	transition: all .5s var(--ease);
}
.header__inner {
	display: flex;
	align-items: center;
	justify-content: space-between;
	height: 78px
}
.logo {
	display: flex;
	align-items: center;
	gap: 14px;
	flex-shrink: 0
}
.logo__img {
	height: 46px;
	width: auto;
	object-fit: contain
}
.logo__text {
	display: flex;
	flex-direction: column;
	line-height: 1.1
}
.logo__text b {
	font-size: 22.5px;
	font-weight: 700;
	letter-spacing: .04em;
	color: var(--text)
}
.logo__text i {
	font-size: 9px;
	font-style: normal;
	letter-spacing: .18em;
	color: var(--steel);
	margin-top: 3px;
	font-family: var(--serif)
}
.nav {
	display: flex;
	align-items: center;
	gap: 6px;
	margin-left: auto;
	margin-right: 30px
}
.nav__link {
	position: relative;
	padding: 10px 16px;
	font-size: 15px;
	font-weight: 400;
	color: var(--text);
	transition: color .4s var(--ease);
}
.nav__link::after {
	content: '';
	position: absolute;
	left: 50%;
	bottom: 4px;
	width: 0;
	height: 2px;
	background: var(--accent);
	transform: translateX(-50%);
	transition: width .5s var(--ease);
}
.nav__link:hover, .nav__link.active {
	color: var(--accent)
}
.nav__link:hover::after, .nav__link.active::after {
	width: 18px
}
.header__cta {
	padding: 11px 24px;
	border: 1px solid var(--text);
	border-radius: 2px;
	font-size: 13px;
	font-weight: 500;
	letter-spacing: .04em;
	transition: all .5s var(--ease);
}
.header__cta:hover {
	background: var(--accent);
	border-color: var(--accent);
	color: #fff
}
.nav-toggle {
	display: none;
	flex-direction: column;
	gap: 5px;
	width: 30px;
	height: 22px;
	justify-content: center
}
.nav-toggle span {
	width: 100%;
	height: 2px;
	background: var(--text);
	transition: all .4s var(--ease)
}
/* ===== 通用区块标题 ===== */
.sec-head {
	margin-bottom: 48px
}
.sec-head--center {
	text-align: center
}
.sec-head--left {
	margin-bottom: 36px
}
.sec-head--center .sec-head__idx, .sec-head--center .sec-head__label, .sec-head--center .sec-head__desc {
	margin-left: auto;
	margin-right: auto
}
.sec-head__idx {
	display: block;
	font-family: var(--serif);
	font-size: 54px;
	font-weight: 500;
	color: var(--accent);
	line-height: 1;
	opacity: .28;
	letter-spacing: .02em;
}
.sec-head__label {
	display: block;
	font-size: 12px;
	letter-spacing: .32em;
	color: var(--steel);
	margin-top: 6px;
	font-weight: 500;
}
.contact .sec-head__label {
	color: #fff;
}
.sec-head__title {
	font-size: 34px;
	font-weight: 700;
	color: var(--text);
	margin-top: 14px;
	letter-spacing: .02em;
	line-height: 1.25;
}
.contact .sec-head__title {
	color: #fff;
}
.sec-head--light .sec-head__title {
	color: #fff
}
.sec-head--light .sec-head__label {
	color: var(--text-light-mut)
}
.sec-head__desc {
	font-size: 15px;
	color: var(--text-mut);
	margin-top: 14px;
	max-width: 560px
}
.contact .sec-head__desc {
	color: #fff;
}
/* ===== Hero ===== */
.hero {
	position: relative;
	height: calc(100vh - 116px);
	min-height: 680px;
	display: flex;
	align-items: center;
	overflow: hidden
}
.hero__slides {
	position: absolute;
	inset: 0;
	overflow: hidden;
}
.hero__slide {
	position: absolute;
	inset: 0;
	background-size: cover;
	background-position: center;
	opacity: 0;
	transform: scale(1.05);
	transition: opacity 1s var(--ease), transform 6s var(--ease);
}
.hero__slide.active {
	opacity: 1;
	transform: scale(1);
}
.hero__slide.active {
	animation: heroZoom 14s var(--ease-out) forwards;
}
@keyframes heroZoom {
to {
transform:scale(1)
}
}
.hero__overlay {
	position: absolute;
	inset: 0;
	background: linear-gradient(100deg, rgba(8,8,10,.88) 0%, rgba(10,10,12,.4) 85%, rgba(12,12,14,.15) 100%);
}
.hero__arrow {
	position: absolute;
	top: 50%;
	transform: translateY(-50%);
	z-index: 3;
	width: 52px;
	height: 52px;
	border: 1px solid rgba(255,255,255,.3);
	background: rgba(0,0,0,.18);
	color: #fff;
	display: flex;
	align-items: center;
	justify-content: center;
	border-radius: 50%;
	backdrop-filter: blur(6px);
	transition: all .45s var(--ease);
}
.hero__arrow svg {
	width: 22px;
	height: 22px;
	transition: transform .45s var(--ease);
}
.hero__arrow:hover {
	background: var(--accent);
	border-color: var(--accent);
	transform: translateY(-50%) scale(1.08);
}
.hero__arrow--prev {
	left: 32px
}
.hero__arrow--prev:hover svg {
	transform: translateX(-3px)
}
.hero__arrow--next {
	right: 32px
}
.hero__arrow--next:hover svg {
	transform: translateX(3px)
}
.hero__inner {
	position: relative;
	z-index: 2;
	color: #fff;
	/* max-width: 760px */
	text-align: center;
}
.hero__label {
	display: inline-flex;
	align-items: center;
	gap: 14px;
	font-size: 13px;
	letter-spacing: .3em;
	color: var(--accent-2);
	margin-bottom: 28px;
	font-weight: 500;
}
.hero__label .line {
	width: 42px;
	height: 1px;
	background: var(--accent-2);
	order: 2;
}
.hero__title {
	font-size: 64px;
	font-weight: 700;
	line-height: 1.14;
	letter-spacing: .01em;
	margin-bottom: 28px;
}
.hero__title em {
	color: var(--accent-2);
	/* font-style: italic;
	font-family: var(--serif); */
	font-weight: 600
}
.hero__desc {
	font-size: 16px;
	line-height: 1.95;
	color: rgba(255,255,255,.82);
	/* max-width: 560px; */
	margin-bottom: 42px;
	font-weight: 300;
}
.hero__btns {
	display: flex;
	gap: 18px;
	flex-wrap: wrap;
	justify-content: center
}
.hero__dots {
	position: absolute;
	bottom: 70px;
	right: 10%;
	/* transform: translateX(-50%); */
	z-index: 2;
	display: flex;
	gap: 12px;
}
.hero__dot {
	width: 30px;
	height: 6px;
	background: rgba(255,255,255,.35);
	border-radius: 2px;
	transition: all .6s var(--ease);
}
.hero__dot:hover {
	background: rgba(255,255,255,.65);
}
.hero__dot.active {
	background: var(--accent-2);
	width: 48px;
}
.hero__scroll {
	position: absolute;
	bottom: 36px;
	left: 50%;
	transform: translateX(-50%);
	z-index: 2;
	display: flex;
	flex-direction: column;
	align-items: center;
	gap: 12px;
	font-size: 10px;
	letter-spacing: .3em;
	color: rgba(255,255,255,.6);
}
.hero__scroll-line {
	width: 1px;
	height: 46px;
	background: rgba(255,255,255,.3);
	position: relative;
	overflow: hidden
}
.hero__scroll-line::after {
	content: '';
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 50%;
	background: #fff;
	animation: scrollLine 2.2s var(--ease) infinite
}
@keyframes scrollLine {
0% {
transform:translateY(-100%)
}
100% {
transform:translateY(200%)
}
}
/* ===== 数据条 ===== */
.stats {
	background: var(--bg-dark);
	color: #fff;
	padding: 70px 0;
	border-top: 1px solid var(--line-dark)
}
.stats__grid {
	display: grid;
	grid-template-columns: repeat(4, 1fr);
	gap: 20px
}
.stats__item {
	text-align: center;
	position: relative;
	padding: 10px 0
}
.stats__item:not(:last-child)::after {
	content: '';
	position: absolute;
	right: -10px;
	top: 50%;
	transform: translateY(-50%);
	width: 1px;
	height: 54px;
	background: var(--line-dark)
}
.stats__num {
	font-family: var(--serif);
	font-size: 58px;
	font-weight: 600;
	line-height: 1;
	color: #fff;
	display: inline-flex;
	align-items: baseline
}
.stats__num i {
	font-size: 30px;
	color: var(--accent-2);
	font-style: normal;
	margin-left: 4px
}
.stats__num--text {
	font-size: 42px;
	letter-spacing: .02em
}
.stats__label {
	font-size: 14px;
	color: var(--text-light-mut);
	margin-top: 14px;
	letter-spacing: .06em
}
/* ===== 关于大松 ===== */
.about {
	padding: 80px 0;
	background: var(--bg);
}
.about__top {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 80px;
	align-items: center
}
.about__media {
	position: relative;
	padding-bottom: 70px
}
.about__photo {
	width: 100%;
	height: 460px;
	background-size: cover;
	background-position: center;
	border-radius: 0 120px 120px 0;
	position: relative
}
.about__photo::after {
	content: '';
	position: absolute;
	inset: 0;
	border-radius: 0 120px 120px 0;
	border: 1px solid rgba(255,255,255,.2);
	pointer-events: none
}
.about__play {
	position: absolute;
	top: 40%;
	left: 50%;
	transform: translate(-50%, -50%);
	width: 96px;
	height: 96px;
	background: rgba(255,255,255,.92);
	border-radius: 50%;
	display: flex;
	align-items: center;
	justify-content: center;
	box-shadow: 0 16px 48px rgba(0,0,0,.25);
	transition: all .45s var(--ease);
	z-index: 2
}
.about__play svg {
	width: 36px;
	height: 36px;
	margin-left: 3px;
	transition: transform .4s var(--ease)
}
.about__play:hover {
	transform: translate(-50%, -50%) scale(1.1);
	background: #fff;
	box-shadow: 0 20px 60px rgba(184,0,0,.3)
}
.about__play:hover svg {
	transform: scale(1.12)
}
.about__text {
	position: relative
}
.about__title {
	font-size: 34px;
	font-weight: 700;
	line-height: 1.35;
	color: var(--text-dark);
	margin-bottom: 30px
}
.about__desc {
	font-size: 14px;
	/* color: var(--text-light-mut); */
	line-height: 2;
	margin-bottom: 16px
}
.about__desc strong {
	color: var(--accent);
	font-weight: 600
}
.about__more {
	display: inline-block;
	margin-top: 18px;
	font-size: 14px;
	font-weight: 500;
	color: var(--accent);
	letter-spacing: .04em;
	transition: all .4s var(--ease);
}
.about__more:hover {
	transform: translateX(6px);
	letter-spacing: .08em
}
/* about__stats 统一（默认与--media均用）*/
.about__stats {
	display: grid;
	grid-template-columns: repeat(3, 1fr);
	gap: 20px
}
.about__stats--media {
	position: absolute;
	left: 50%;
	bottom: 80px;
	transform: translateX(-50%);
	width: calc(100% - 48px);
	background: rgba(255,255,255,.5);
	padding: 24px;
	border-radius: 8px 8px 120px 8px;
	box-shadow: 0 14px 44px rgba(0,0,0,.08);
	z-index: 5
}
.about__stat {
	text-align: center;
	position: relative
}
.about__stat:not(:last-child)::after {
	content: '';
	position: absolute;
	right: -20px;
	top: 20%;
	width: 1px;
	height: 60%;
	background: var(--line)
}
.about__stat-num {
	font-family: var(--serif);
	font-size: 52px;
	font-weight: 700;
	line-height: 1;
	color: var(--accent);
	display: inline-flex;
	align-items: baseline;
	margin-bottom: 16px
}
.about__stat-num i {
	font-size: 26px;
	color: var(--accent);
	font-style: normal;
	font-weight: 600;
	margin-left: 4px
}
.about__stat-num .iso-txt {
	font-size: 38px;
	margin-left: 6px
}
.about__stat-label {
	font-size: 14px;
	color: var(--text);
	letter-spacing: .04em
}
.aboutscreen {
	width: 90%;
	margin: 0 auto;
}
.about__features {
	display: grid;
	grid-template-columns: repeat(3, 1fr);
	gap: 24px;/* margin-top: 80px */
}
.about__feat {
	position: relative;
	height: 260px;
	overflow: hidden;
	cursor: pointer;
	transition: all .5s var(--ease);
	text-decoration: none;
	color: inherit;
	display: block
}
.about__feat--photo {
	background-size: cover;
	background-position: center;
	color: #fff
}
.about__feat-overlay {
	position: absolute;
	inset: 0;
	background: linear-gradient(180deg, rgba(0,0,0,.3) 0%, rgba(0,0,0,.8) 100%);
	z-index: 1;
	transition: background .5s var(--ease)
}
.about__feat-content {
	position: absolute;
	inset: 0;
	display: flex;
	flex-direction: column;
	justify-content: flex-end;
	padding: 32px;
	z-index: 2;
	transition: transform .5s var(--ease)
}
.about__feat-ico {
	width: 44px;
	height: 44px;
	margin-bottom: 18px;
	position: relative;
	z-index: 2
}
.about__feat-ico--1 {
	background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23ffffff' stroke-width='1.5'%3E%3Crect x='3' y='7' width='18' height='13' rx='1'/%3E%3Cpath d='M8 7V5a2 2 0 012-2h4a2 2 0 012 2v2'/%3E%3Ccircle cx='12' cy='13.5' r='3.5'/%3E%3C/svg%3E") center/contain no-repeat
}
.about__feat-ico--2 {
	background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23ffffff' stroke-width='1.5'%3E%3Cpath d='M12 2L2 7l10 5 10-5-10-5z'/%3E%3Cpath d='M2 17l10 5 10-5'/%3E%3Cpath d='M2 12l10 5 10-5'/%3E%3C/svg%3E") center/contain no-repeat
}
.about__feat-ico--3 {
	background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23ffffff' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='12' cy='12' r='3'/%3E%3Cpath d='M12 1v6m0 10v6M4.22 4.22l4.24 4.24m7.08 7.08l4.24 4.24M1 12h6m10 0h6M4.22 19.78l4.24-4.24m7.08-7.08l4.24-4.24'/%3E%3C/svg%3E") center/contain no-repeat
}
.about__feat-title {
	font-size: 26px;
	font-weight: 700;
	color: #fff;
	letter-spacing: .08em;
	margin-bottom: 10px
}
.about__feat-more {
	font-size: 13px;
	color: rgba(255,255,255,.75);
	letter-spacing: .06em;
	transition: color .4s var(--ease)
}
.about__feat:hover .about__feat-more {
	color: #fff
}
.about__feat:hover .about__feat-content {
	transform: translateY(-4px)
}
.about__feat:hover .about__feat-overlay {
	background: linear-gradient(180deg, rgba(0,0,0,.2) 0%, rgba(184,0,0,.75) 100%)
}
.about__feat-deco {
	position: absolute;
	width: 120px;
	height: 120px;
	border: 1px solid rgba(255,255,255,.1);
	border-radius: 50%;
	transition: all .6s var(--ease);
	pointer-events: none
}
.about__feat:hover .about__feat-deco {
	transform: scale(1.3);
	opacity: .4;
	border-color: rgba(255,255,255,.2)
}
.about__feat--left .about__feat-deco {
	bottom: -40px;
	left: -40px
}
.about__feat--right .about__feat-deco {
	bottom: -40px;
	right: -40px
}
/* ===== 核心优势 ===== */
.advantage {
	padding: 120px 0;
	background: var(--bg-alt)
}
.adv__grid {
	display: grid;
	grid-template-columns: repeat(4, 1fr);
	gap: 24px
}
.adv__card {
	background: #fff;
	padding: 44px 30px 40px;
	border: 1px solid var(--line);
	position: relative;
	transition: all .6s var(--ease);
	overflow: hidden;
}
.adv__card::before {
	content: '';
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 3px;
	background: var(--accent);
	transform: scaleX(0);
	transform-origin: left;
	transition: transform .6s var(--ease)
}
.adv__card:hover {
	transform: translateY(-8px);
	box-shadow: 0 30px 60px rgba(0,0,0,.08);
	border-color: transparent
}
.adv__card:hover::before {
	transform: scaleX(1)
}
.adv__icon {
	width: 56px;
	height: 56px;
	color: var(--accent);
	margin-bottom: 24px
}
.adv__no {
	font-family: var(--serif);
	font-size: 14px;
	color: var(--steel);
	letter-spacing: .1em;
	margin-bottom: 6px
}
.adv__title {
	font-size: 20px;
	font-weight: 700;
	margin-bottom: 14px;
	letter-spacing: .02em
}
.adv__desc {
	font-size: 14px;
	color: var(--text-mut);
	line-height: 1.85
}
/* ===== 大松优势（吉茂源参考版式） ===== */
.advantage2 {
	padding: 100px 0;
	position: relative;
	background: linear-gradient(135deg, rgba(15,20,30,.86) 0%, rgba(20,25,38,.86) 100%),  linear-gradient(135deg, #141720 0%, #1f2433 100%);
	color: #fff;
	overflow: hidden
}
.advantage2::before {
	content: '';
	position: absolute;
	top: 0;
	left: 0;
	right: 0;
	bottom: 0;
	background-image: url('../images/a3.jpg');
	background-size: cover;
	background-position: center;
	opacity: .12;
	pointer-events: none;
	filter: grayscale(1) saturate(.3)
}
.advantage2 .sec-head__title {
	color: #fff
}
.advantage2 .sec-head__desc {
	color: rgba(255,255,255,.6)
}
.advantage2 .sec-head__label {
	color: rgba(255,255,255,.45)
}
.advantage2 .sec-head__idx {
	color: rgba(184,0,0,.55)
}
.adv2__grid {
	display: grid;
	grid-template-columns: 1.05fr 1.35fr;
	gap: 48px;
	align-items: stretch;
	/* max-width: 1200px; */
	margin: 0 auto;
	position: relative;
	z-index: 2
}
/* === 左侧品牌卡 === */
.adv2__brand {
	position: relative;
	border: 1px solid rgba(255,255,255,.15);
	padding: 0;
	background: rgba(10,12,18,.55);
	backdrop-filter: blur(6px);
	display: flex;
	flex-direction: column;
	overflow: hidden
}
.adv2__brand-img {
	height: 260px;
	background-size: cover;
	background-position: center;
	position: relative;
	z-index: 1
}
.adv2__brand-img::after {
	content: '';
	position: absolute;
	inset: 0;
	background: linear-gradient(180deg, rgba(10,12,18,0) 55%, rgba(10,12,18,.95) 100%)
}
.adv2__brand-title {
	padding: 0 32px;
	margin-top: -96px;
	position: relative;
	z-index: 2
}
.adv2__brand-title h3 {
	font-size: 30px;
	font-weight: 700;
	line-height: 1.25;
	color: #fff;
	margin: 0 0 8px;
	letter-spacing: .02em
}
.adv2__brand-title span {
	display: block;
	font-family: var(--serif);
	font-style: italic;
	font-size: 16px;
	color: rgba(255,255,255,.7);
	margin-bottom: 18px;
	letter-spacing: .03em
}
.adv2__brand-line {
	display: block;
	width: 44px;
	height: 3px;
	background: var(--accent);
	position: absolute;
	bottom: 0;
	left: 32px
}
.adv2__brand-btn {
	display: inline-block;
	margin: 28px 32px 0;
	padding: 12px 28px;
	border: 1px solid rgba(255,255,255,.45);
	color: #fff;
	font-size: 13px;
	letter-spacing: .12em;
	transition: all .45s var(--ease);
	width: fit-content;
	width: -webkit-fit-content
}
.adv2__brand-btn:hover {
	background: var(--accent);
	border-color: var(--accent)
}
.adv2__brand-features {
	display: grid;
	grid-template-columns: repeat(3, 1fr);
	gap: 14px;
	padding: 32px 32px 0
}
.adv2__brand-feat {
	text-align: center
}
.adv2__brand-feat svg {
	width: 38px;
	height: 38px;
	display: block;
	margin: 0 auto 8px;
	padding: 9px;
	border: 1px solid rgba(255,255,255,.25);
	color: #fff;
	transition: all .4s var(--ease)
}
.adv2__brand-feat:hover svg {
	background: var(--accent);
	border-color: var(--accent)
}
.adv2__brand-feat b {
	font-size: 12px;
	font-weight: 500;
	color: rgba(255,255,255,.75);
	letter-spacing: .1em
}
.adv2__brand-hotline {
	margin: 32px;
	padding: 18px 22px;
	border-top: 1px solid rgba(255,255,255,.1);
	display: flex;
	align-items: center;
	gap: 14px;
	font-size: 14px;
	color: rgba(255,255,255,.75)
}
.adv2__brand-hotline svg {
	width: 44px;
	height: 44px;
	flex-shrink: 0;
	padding: 10px;
	background: var(--accent);
	color: #fff
}
.adv2__brand-hotline b {
	font-size: 24px;
	color: #ffcc00;
	font-family: var(--serif);
	font-weight: 700;
	margin-left: 4px;
	letter-spacing: .05em
}
.adv2__brand-corner {
	position: absolute;
	width: 56px;
	height: 56px;
	border-color: var(--accent);
	z-index: 3
}
.adv2__brand-corner.tl {
	top: 14px;
	left: 14px;
	border-top: 2px solid var(--accent);
	border-left: 2px solid var(--accent)
}
.adv2__brand-corner.br {
	bottom: 14px;
	right: 14px;
	border-bottom: 2px solid var(--accent);
	border-right: 2px solid var(--accent)
}
/* === 右侧 2×2 卡片 === */
.adv2__cards {
	display: grid;
	grid-template-columns: repeat(2, 1fr);
	gap: 20px;
	background: rgba(255,255,255,.94);
	padding: 36px;
	backdrop-filter: blur(8px);
	color: var(--text)
}
.adv2__card {
	display: block;
	padding: 18px 12px 18px 2px;
	position: relative;
	transition: all .5s var(--ease);
	border-bottom: 1px solid rgba(0,0,0,.08)
}
.adv2__card:nth-last-child(-n+2) {
	border-bottom: none
}
.adv2__card:hover {
	transform: translateY(-3px)
}
.adv2__card-no {
	display: block;
	font-family: var(--serif);
	font-size: 40px;
	font-weight: 700;
	line-height: 1;
	color: var(--accent);
	margin-bottom: 10px;
	letter-spacing: .02em
}
.adv2__card h4 {
	font-size: 19px;
	font-weight: 700;
	color: var(--text);
	margin: 0 0 12px;
	letter-spacing: .02em
}
.adv2__card i {
	display: block;
	width: 38px;
	height: 2px;
	background: var(--accent);
	margin-bottom: 14px
}
.adv2__card p {
	font-size: 13px;
	line-height: 1.85;
	color: #5a5d66;
	margin: 0
}
/* ===== 产品中心 ===== */
.products {
	padding: 80px 0px;
	background: #f1f1f1;
}
.prod__tabs {
	display: flex;
 gap: clamp(4px, .5vw, 8px);
	margin-bottom: 54px;
	flex-wrap: nowrap;
	overflow-x: auto;
	-webkit-overflow-scrolling: touch;
	scrollbar-width: none;
	padding: 4px 2px
}
.prod__tabs::-webkit-scrollbar {
 display: none
}
.prod__tab {
	flex: 0 0 auto;
	white-space: nowrap;
	padding: 13px clamp(10px, 1.6vw, 32px);
 font-size: clamp(12px, .95vw, 15px);
	color: var(--text-mut);
	border: 1px solid var(--line);
	border-radius: 2px;
	transition: all .5s var(--ease);
}
.prod__tab:first-child {
	margin-left: auto
}
.prod__tab:last-child {
	margin-right: auto
}
.prod__tab:hover {
	color: var(--accent);
	border-color: var(--accent)
}
.prod__tab.active {
	background: var(--accent);
	color: #fff;
	border-color: var(--accent)
}
.prod__panel {
	display: none;
	animation: fadeIn .8s var(--ease)
}
.prod__panel.active {
	display: block
}
@keyframes fadeIn {
from {
opacity:0;
transform:translateY(20px)
}
to {
	opacity: 1;
	transform: none
}
}
.prod__grid {
	display: grid;
	grid-template-columns: repeat(4, 1fr);
	gap: 24px
}
.prod__card {
	position: relative;
	display: block;
	overflow: hidden;
	background: var(--bg-alt);
	border-radius: 2px;
	transition: transform .6s var(--ease);
}
.prod__card:hover {
	transform: translateY(-6px)
}
.prod__img {
	width: 100%;
	height: 250px;
	border: 1px solid var(--line);
	background-color: #fff;
	background-size: contain;
	background-position: center;
	background-repeat: no-repeat;
	transition: transform 1s var(--ease)
}
.prod__card:hover .prod__img {
	transform: scale(1.08)
}
.prod__mask {
	position: absolute;
	inset: 0;
	background: rgba(12,12,14,.55);
	display: flex;
	align-items: center;
	justify-content: center;
	opacity: 0;
	transition: opacity .5s var(--ease);
}
.prod__mask span {
	color: #fff;
	font-size: 14px;
	letter-spacing: .08em;
	padding: 11px 26px;
	border: 1px solid #fff;
	border-radius: 2px;
	transition: all .5s var(--ease)
}
.prod__card:hover .prod__mask {
	opacity: 1
}
.prod__card:hover .prod__mask span {
	background: var(--accent);
	border-color: var(--accent)
}
.prod__name {
	padding: 18px 20px;
	font-size: 15px;
	font-weight: 500;
	color: var(--text);
	background: #fff;
	text-align: center;
	letter-spacing: .02em;
}
.prod__more {
	text-align: center;
	margin-top: 54px
}
/* ===== 视频中心 ===== */
.video {
	position: relative;
	padding: 130px 0;
	overflow: hidden
}
.video__bg {
	position: absolute;
	inset: 0;
	background-size: cover;
	background-position: center;
	transform: scale(1.05)
}
.video__overlay {
	position: absolute;
	inset: 0;
	background: linear-gradient(180deg, rgba(8,8,10,.85), rgba(8,8,10,.92))
}
.video__inner {
	position: relative;
	z-index: 2
}
.video__play {
	display: flex;
	flex-direction: column;
	align-items: center;
	gap: 20px;
	margin: 30px 0 60px
}
.play-btn {
	width: 80px;
	height: 80px;
	color: #fff;
	transition: transform .5s var(--ease)
}
.play-btn:hover {
	transform: scale(1.1);
	color: var(--accent-2)
}
.play-btn circle {
	transform-origin: center;
	animation: playPulse 2.5s var(--ease) infinite
}
@keyframes playPulse {
0%, 100% {
opacity:.6
}
50% {
opacity:1
}
}
.video__tip {
	color: rgba(255,255,255,.8);
	font-size: 14px;
	letter-spacing: .06em
}
.video__thumbs {
	display: grid;
	grid-template-columns: repeat(3, 1fr);
	gap: 24px
}
.video__thumb {
	position: relative;
	overflow: hidden;
	cursor: pointer;
	border-radius: 2px
}
.video__thumb-img {
	height: 230px;
	background-size: cover;
	background-position: center;
	transition: transform 1s var(--ease)
}
.video__thumb:hover .video__thumb-img {
	transform: scale(1.08)
}
.video__thumb-meta {
	position: absolute;
	left: 0;
	bottom: 0;
	width: 100%;
	padding: 18px 22px;
	background: linear-gradient(180deg, transparent, rgba(8,8,10,.85));
	color: #fff;
	font-size: 14px;
	display: flex;
	align-items: center;
	gap: 10px;
}
.play-mini {
	color: var(--accent-2);
	font-size: 16px
}
/* ===== 新闻资讯 ===== */
.news {
	padding: 120px 0;
	background: var(--bg-alt)
}
.news__head {
	display: flex;
	justify-content: space-between;
	align-items: flex-end;
	margin-bottom: 56px;
	flex-wrap: wrap;
	gap: 24px
}
.news__head .sec-head {
	margin-bottom: 0
}
.news__head .sec-head--left .sec-head__idx {
	font-size: 64px;
	opacity: .2
}
.news__head .sec-head--left .sec-head__label {
	font-size: 11px;
	letter-spacing: .36em;
	margin-top: 8px
}
.news__head .sec-head--left .sec-head__title {
	font-size: 36px;
	margin-top: 12px
}
.news__tabs {
	display: flex;
	align-items: center;
	gap: 28px
}
.news__tab {
	font-size: 15px;
	color: var(--text-mut);
	padding: 6px 0;
	position: relative;
	transition: color .4s var(--ease)
}
.news__tab::after {
	content: '';
	position: absolute;
	left: 0;
	bottom: 0;
	width: 0;
	height: 2px;
	background: var(--accent);
	transition: width .5s var(--ease)
}
.news__tab.active, .news__tab:hover {
	color: var(--text)
}
.news__tab.active::after {
	width: 100%
}
.news__more {
	font-size: 14px;
	color: var(--accent);
	font-weight: 500
}
.news__panel {
	display: none;
	animation: fadeIn .8s var(--ease)
}
.news__panel.active {
	display: grid;
	grid-template-columns: 1.2fr 1fr;
	gap: 40px;
	align-items: stretch
}
.news__panel[data-news-panel="0"] {
	grid-template-columns: 1.4fr 1fr;
	gap: 40px
}
.news__panel[data-news-panel="1"] {
	grid-template-columns: 1fr
}
.news__feature {
	display: grid;
	grid-template-rows: auto 1fr;
	background: #fff;
	overflow: hidden;
	border: 1px solid var(--line);
	transition: all .5s var(--ease);
	height: 100%
}
.news__feature:hover {
	box-shadow: 0 24px 50px rgba(0,0,0,.08);
	border-color: transparent
}
.news__feature-img {
	background-size: cover;
	background-position: center;
	min-height: 280px
}
.news__feature-body {
	padding: 32px 30px;
	display: flex;
	flex-direction: column;
	justify-content: center
}
.news__date {
	font-family: var(--serif);
	font-size: 16px;
	color: var(--accent);
	letter-spacing: .04em;
	margin-bottom: 14px
}
.news__feature-title {
	font-size: 21px;
	font-weight: 700;
	line-height: 1.45;
	margin-bottom: 14px;
	transition: color .4s var(--ease)
}
.news__feature:hover .news__feature-title {
	color: var(--accent)
}
.news__feature-desc {
	font-size: 14px;
	color: var(--text-mut);
	line-height: 1.85;
	margin-bottom: 22px
}
.news__read {
	font-size: 13px;
	color: var(--accent);
	letter-spacing: .06em;
	font-weight: 500
}
.news__list {
	display: flex;
	flex-direction: column
}
.news__list--full {
	grid-template-columns: 1fr 1fr;
	display: grid;
	gap: 0 40px
}
.news__item {
	display: grid;
	grid-template-columns: auto 1fr;
	gap: 20px;
	align-items: center;
	padding: 22px 4px;
	border-bottom: 1px solid var(--line);
	transition: padding .5s var(--ease);
}
.news__item:hover {
	padding-left: 10px
}
.news__item-date {
	font-family: var(--serif);
	font-size: 22px;
	color: var(--steel);
	font-weight: 600
}
.news__item:hover .news__item-date {
	color: var(--accent)
}
.news__item-title {
	font-size: 15px;
	color: var(--text);
	line-height: 1.5;
	transition: color .4s var(--ease)
}
.news__item:hover .news__item-title {
	color: var(--accent)
}
/* ===== 常见问题 ===== */
.faq {
	padding: 120px 0;
	background: var(--bg)
}
.faq__inner {
	display: grid;
	grid-template-columns: 1fr 1.4fr;
	gap: 80px;
	align-items: start
}
.faq__left {
	position: sticky;
	top: 120px
}
.faq__left .btn {
	margin-top: 30px
}
.faq__list {
	display: flex;
	flex-direction: column;
	gap: 14px
}
.faq__item {
	border: 1px solid var(--line);
	background: #fff;
	transition: border-color .4s var(--ease);
	overflow: hidden
}
.faq__item.active {
	border-color: var(--accent)
}
.faq__q {
	width: 100%;
	display: flex;
	justify-content: space-between;
	align-items: center;
	gap: 20px;
	padding: 24px 30px;
	font-size: 16px;
	font-weight: 500;
	text-align: left;
	color: var(--text);
	transition: color .4s var(--ease);
}
.faq__item.active .faq__q {
	color: var(--accent)
}
.faq__icon {
	position: relative;
	width: 18px;
	height: 18px;
	flex-shrink: 0
}
.faq__icon::before, .faq__icon::after {
	content: '';
	position: absolute;
	top: 50%;
	left: 50%;
	background: currentColor;
	transition: transform .5s var(--ease)
}
.faq__icon::before {
	width: 14px;
	height: 2px;
	transform: translate(-50%, -50%)
}
.faq__icon::after {
	width: 2px;
	height: 14px;
	transform: translate(-50%, -50%)
}
.faq__item.active .faq__icon::after {
	transform: translate(-50%, -50%) rotate(90deg)
}
.faq__a {
	max-height: 0;
	overflow: hidden;
	transition: max-height .6s var(--ease)
}
.faq__a p {
	padding: 0 30px 26px;
	font-size: 14px;
	color: var(--text-mut);
	line-height: 1.95
}
/* ===== 联系我们 ===== */
.contact {
	background: url('../images/contact.jpg') no-repeat center center;
	background-position: center;
	background-size: cover;
	color: var(--text);
	padding: 120px 0;
	position: relative;
	overflow: hidden
}
.contact::before {
/* content: '';
	position: absolute;
	top: 0;
	right: -100px;
	width: 400px;
	height: 400px;
	border: 1px solid var(--line);
	border-radius: 50%;
	opacity: .5 */
}
.contact__inner {
	display: block;
	position: relative;
	z-index: 2
}
.contact__info {
	max-width: 1200px;
	margin: 0 auto;
	display: grid;
	grid-template-columns: repeat(4, 1fr);
	gap: 24px;
	align-items: stretch;
	text-align: left
}
.sec-head--center-sm {
	grid-column: 1 / -1;
	text-align: center;
	margin-bottom: 32px
}
.sec-head--center-sm .sec-head__idx, .sec-head--center-sm .sec-head__label, .sec-head--center-sm .sec-head__title, .sec-head--center-sm .sec-head__desc {
	margin-left: auto;
	margin-right: auto
}
.contact__list {
	display: contents
}
.contact__card {
	background: rgba(255,255,255,.7);
	color: var(--text);
	padding: 32px 24px;
	border: 1px solid var(--line);
	transition: all .5s var(--ease);
	display: flex;
	flex-direction: column;
	gap: 6px;
	height: 100%;
	min-height: 260px;
	min-width: 0;
	overflow: hidden
}
.contact__card:hover {
	transform: translateY(-6px);
	box-shadow: 0 20px 48px rgba(0,0,0,.08);
	border-color: transparent
}
.contact__ico {
	width: 52px;
	height: 52px;
	flex-shrink: 0;
	border: 1px solid var(--line);
	display: flex;
	align-items: center;
	justify-content: center;
	color: var(--accent);
	margin-bottom: 16px;
	background: #fff;
	border-radius: 50%;
	transition: all .4s var(--ease)
}
.contact__card:hover .contact__ico {
	background: var(--accent);
	color: #fff;
	border-color: var(--accent)
}
.contact__ico svg {
	width: 22px;
	height: 22px
}
.contact__cap {
	font-size: 12px;
	color: var(--steel);
	letter-spacing: .16em;
	text-transform: uppercase;
	font-weight: 500
}
.contact__val {
	font-size: 17px;
	color: var(--text);
	font-weight: 600;
	line-height: 1.5;
	word-break: break-all;
	overflow-wrap: anywhere
}
.contact__qr {
	margin-top: 0;
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	text-align: center;
	gap: 14px;
	background: rgba(255,255,255,.7);
	color: var(--text);
	padding: 32px 20px;
	border: 1px solid var(--line);
	height: 100%;
	min-height: 260px
}
.contact__qr-box {
	width: 120px;
	height: 120px;
	background: #fff;
	border: 1px solid var(--line);
	padding: 8px;
	flex-shrink: 0
}
.contact__qr-box img {
	width: 100%;
	height: 100%;
	object-fit: contain;
	display: block
}
.contact__qr-title {
	font-size: 22px;
	font-weight: 700;
	color: var(--text);
	letter-spacing: .04em;
	margin-bottom: 8px
}
.contact__qr-desc {
	font-size: 14px;
	color: var(--text-mut);
	line-height: 1.7
}
/* ===== 页脚 ===== */
.footer {
	/* background: #08080a;
	color: var(--text-light-mut); */
	padding: 80px 0 0;
	background: #f3f3f3;
}
.footer__inner {
	display: grid;
	grid-template-columns: 2fr 1fr 1fr 2fr;
	gap: 40px;
	padding-bottom: 60px;
	border-bottom: 1px solid #ddd;
}
.footer__brand {
	padding-right: 30px
}
.footer__logo {
	/* height: 80px; */
	/* width: auto; */
	margin-bottom: 20px;/* filter: brightness(0) invert(1) */
}
.footer__desc {
	font-size: 13px;
	line-height: 1.85;
	max-width: 340px
}
.footer__col {
	display: flex;
	flex-direction: column;
	gap: 12px
}
.footer__title {
	font-size: 16px;
	/* color: #fff; */
	font-weight: 600;
	margin-bottom: 6px;
	letter-spacing: .04em
}
.footer__col a, .footer__col span {
	font-size: 13px;
	color: var(--text-light-mut);
	transition: color .4s var(--ease)
}
.footer__col a:hover {
	color: var(--accent-2)
}
/* 页脚联系我们：靠右对齐 + 图标 */
.footer__col--contact {
	align-items: flex-end;
	text-align: right;
}
.footer__contact {
	display: inline-flex;
	align-items: center;
	justify-content: flex-end;
	gap: 8px;
	text-align: right;
}
.footer__contact .ico {
	width: 15px;
	height: 15px;
	color: var(--accent-2);
	flex-shrink: 0;
}
.footer__links {
	display: flex;
	flex-direction: column;
	gap: 12px
}
.footer__bar {
	padding: 22px 0
}
.footer__bar-inner {
	display: flex;
	justify-content: space-between;
	align-items: center;
	font-size: 12px;
	color: var(--text-mut-2);
	letter-spacing: .04em;
	text-align: center;
}
/* ===== 视频弹窗 ===== */
.video-modal {
	position: fixed;
	inset: 0;
	z-index: 500;
	display: none;
	align-items: center;
	justify-content: center
}
.video-modal.active {
	display: flex
}
.video-modal__backdrop {
	position: absolute;
	inset: 0;
	background: rgba(0,0,0,.92);
	backdrop-filter: blur(6px);
	animation: fadeIn .4s var(--ease)
}
.video-modal__box {
	position: relative;
	width: min(900px, 90vw);
	z-index: 2;
	animation: modalIn .6s var(--ease-out)
}
@keyframes modalIn {
from {
opacity:0;
transform:translateY(30px) scale(.96)
}
to {
	opacity: 1;
	transform: none
}
}
.video-modal__close {
	position: absolute;
	top: -44px;
	right: 0;
	color: #fff;
	font-size: 34px;
	width: 40px;
	height: 40px;
	line-height: 1;
	transition: transform .4s var(--ease)
}
.video-modal__close:hover {
	transform: rotate(90deg);
	color: var(--accent-2)
}
.video-modal__player {
	aspect-ratio: 16/9;
	background: #000;
	overflow: hidden;
	border: 1px solid var(--line-dark)
}
.video-modal__player video {
	width: 100%;
	height: 100%;
	object-fit: contain;
	display: block;
	background: #000;
}
/* ===== 返回顶部 ===== */
.backtop {
	position: fixed;
	right: 30px;
	bottom: 30px;
	z-index: 300;
	width: 48px;
	height: 48px;
	background: var(--accent);
	color: #fff;
	display: flex;
	align-items: center;
	justify-content: center;
	border-radius: 2px;
	opacity: 0;
	visibility: hidden;
	transition: all .5s var(--ease);
}
.backtop svg {
	width: 20px;
	height: 20px
}
.backtop.show {
	opacity: 1;
	visibility: visible
}
.backtop:hover {
	background: #fff;
	color: var(--accent)
}
/* ===== 滚动揭示动画 ===== */
.reveal {
	opacity: 0;
	transform: translateY(36px);
	transition: opacity 1s var(--ease-out), transform 1s var(--ease-out)
}
.reveal.in {
	opacity: 1;
	transform: none
}

/* ===== 响应式 ===== */
@media(max-width:1440px) {
.container {
	padding: 0 32px
}
.hero__title {
	font-size: 54px
}
.sec-head__title {
	font-size: 30px
}
.stats__num {
	font-size: 50px
}
}
@media(max-width:1200px) {
.products .container {
	max-width: 92%
}
.prod__tabs {
	gap: 4px
}
.prod__tab {
	padding: 11px 12px;
	font-size: 12px
}
.about__top {
	grid-template-columns: 1fr;
	gap: 50px
}
.about__stats {
	grid-template-columns: repeat(3, 1fr);
	gap: 20px;
	margin-top: 30px
}
.about__stats--media {
	position: static;
	right: auto;
	left: auto;
	transform: none;
	padding: 20px;
	margin: 0;
	border-radius: 8px;
	width: 100%;
	background: transparent;
	box-shadow: none
}
.about__photo {
	height: 380px;
	max-width: 680px;
	margin: 0 auto
}
.about__media {
	padding-bottom: 60px
}
.about__stat-num {
	font-size: 56px
}
.about__features {
	gap: 16px;
	margin-top: 60px
}
.about__feat {
	height: 220px
}
.about__feat-content {
	padding: 24px
}
.about__feat-title {
	font-size: 22px
}
.faq__inner, .contact__inner {
	grid-template-columns: 1fr;
	gap: 50px
}
.contact__inner {
	display: block
}
.contact__info {
	max-width: 100%;
	display: grid;
	grid-template-columns: 1fr;
	gap: 24px
}
.contact__list {
	display: contents
}
.contact__card {
	padding: 24px 20px;
	min-height: auto
}
.contact__qr {
	padding: 24px;
	margin-top: 0;
	height: auto;
	min-height: auto
}
.contact__qr-box {
	width: 110px;
	height: 110px
}
.contact__ico {
	width: 46px;
	height: 46px
}
.faq__left {
	position: static
}
.prod__grid, .adv__grid, .video__thumbs {
	grid-template-columns: repeat(2, 1fr)
}
.adv2__grid {
	grid-template-columns: 1fr;
	gap: 28px
}
.adv2__cards {
	padding: 28px
}
.footer__inner {
	grid-template-columns: 1fr 1fr 1fr
}
.footer__brand {
	grid-column: 1/-1
}
.news__panel[data-news-panel="0"] {
	grid-template-columns: 1fr
}
.news__panel.active {
	grid-template-columns: 1fr;
	gap: 28px
}
.news__feature {
	grid-template-columns: 1fr;
	grid-template-rows: auto auto
}
.news__feature-img {
	min-height: 220px
}
.nav {
	display: none
}
.nav-toggle {
	display: flex
}
.header__cta {
	display: none
}
}
@media(max-width:768px) {
.hero__scroll{
	left:10%;
	bottom:-20px;
}
.contact__info {
	grid-template-columns: repeat(2, 1fr) !important;
}
.container {
	max-width: 100%;
	padding: 0 20px
}
body {
	font-size: 14px
}
.about {
	padding: 60px 0
}
.about__top {
	gap: 40px
}
.about__photo {
	height: 300px;
	border-radius: 0 80px 80px 0
}
.about__photo::after {
	border-radius: 0 80px 80px 0
}
.about__play {
	width: 76px;
	height: 76px
}
.about__play svg {
	width: 28px;
	height: 28px
}
.about__title {
	font-size: 22px;
	margin-bottom: 20px
}
.about__desc {
	font-size: 13px;
	line-height: 1.9
}
.about__stats {
	grid-template-columns: repeat(3, 1fr);
	gap: 20px 12px;
	margin-top: 40px
}
.about__stats--media {
	position: static;
	background: transparent;
	padding: 0;
	box-shadow: none;
	border-radius: 0;
	margin-top: 20px
}
.about__stat:not(:last-child)::after {
	display: block
}
.about__stat:nth-child(odd)::after {
	content: '';
	display: block;
	position: absolute;
	right: -6px;
	top: 20%;
	width: 1px;
	height: 60%;
	background: var(--line)
}
.about__media {
	padding-bottom: 0 !important
}
.about__stat-num {
	font-size: 32px
}
.about__stat-num .iso-txt {
	font-size: 24px
}
.about__stat-num i {
	font-size: 18px
}
.about__stat-label {
	font-size: 12px
}
.about__features {
	grid-template-columns: 1fr;
	gap: 16px;
	margin-top: 40px
}
.about__feat {
	height: 180px
}
.about__feat-content {
	padding: 20px
}
.about__feat-title {
	font-size: 20px
}
.nav__link {
	width: 100%;
	text-align: center;
}
.topbar__left {
	display: none
}
.hero {
	min-height: 200px;
	height: calc(100vh - 760px)
}
.hero__title {
	font-size: 18px;
	line-height:24px;
}
.hero__desc {
	font-size: 12px;
	line-height:15px;
}
.hero__dots {
	bottom: 20px;
	gap: 8px
}
.hero__dot {
	width: 24px;
	height: 2px
}
.hero__dot.active {
	width: 36px
}
.hero__btns {
	gap: 12px
}
.hero__arrow {
	width: 42px;
	height: 42px
}
.hero__arrow svg {
	width: 18px;
	height: 18px
}
.hero__arrow--prev {
	left: 12px
}
.hero__arrow--next {
	right: 12px
}
.stats__grid {
	grid-template-columns: repeat(2, 1fr);
	gap: 40px 20px
}
.stats__item:not(:last-child)::after {
	display: none
}
.about__title {
	font-size: 26px
}
.about__photo {
	height: 360px
}
.about__play {
	width: 80px;
	height: 80px
}
.about__play svg {
	width: 30px;
	height: 30px
}
.about__stats {
	grid-template-columns: repeat(3, 1fr)
}
.about__stats--media {
	position: static;
	right: auto;
	left: auto;
	transform: none;
	padding: 18px;
	border-radius: 8px;
	width: 100%;
	background: transparent;
	box-shadow: none
}
.about__media {
	padding-bottom: 0 !important
}
.about__stat-num {
	font-size: 56px
}
.about__stat-num .iso-txt {
	font-size: 28px
}
.about__stat:not(:last-child)::after {
	right: -10px
}
.sec-head__title {
	font-size: 26px
}
.sec-head__idx {
	font-size: 42px
}
.adv__card {
	padding: 32px 24px
}
.prod__grid, .adv__grid, .video__thumbs {
	grid-template-columns: 1fr
}
.advantage2 {
	padding: 60px 0
}
.adv2__brand-img {
	height: 220px
}
.adv2__brand-title {
	padding: 0 24px;
	margin-top: -84px
}
.adv2__brand-title h3 {
	font-size: 24px
}
.adv2__brand-title span {
	font-size: 14px;
	margin-bottom: 12px
}
.adv2__brand-btn {
	margin: 20px 24px 0;
	padding: 10px 22px;
	font-size: 12px
}
.adv2__brand-features {
	padding: 24px 24px 0
}
.adv2__brand-hotline {
	margin: 24px;
	padding: 16px;
	flex-direction: column;
	gap: 10px;
	text-align: center
}
.adv2__brand-hotline b {
	font-size: 20px
}
.adv2__cards {
	grid-template-columns: 1fr;
	padding: 22px
}
.adv2__card {
	padding: 16px 4px;
	border-bottom: 1px solid rgba(0,0,0,.08)
}
.adv2__card:last-child {
	border-bottom: none
}
.adv2__card-no {
	font-size: 32px
}
.adv2__card h4 {
	font-size: 17px
}
.prod__tabs {
	justify-content: flex-start;
	gap: 6px
}
.prod__tab {
	padding: 8px 14px;
	font-size: 12px
}
.prod__img {
	height: 240px
}
.news__head {
	flex-direction: column;
	align-items: flex-start
}
.news__panel.active {
	grid-template-columns: 1fr;
	gap: 30px
}
.news__feature-body {
	padding: 30px 24px
}
.faq__q {
	padding: 20px 22px;
	font-size: 14px
}
.contact__info {
	grid-template-columns: repeat(4, 1fr);
	max-width: 100%;
	gap: 16px
}
.contact__list {
	display: contents
}
.contact__card {
	padding: 22px 16px;
	min-height: 220px
}
.contact__val {
	font-size: 15px
}
.contact__qr {
	padding: 22px 14px;
	gap: 10px;
	min-height: 220px
}
.contact__qr-title {
	font-size: 16px;
	margin-bottom: 6px
}
.contact__qr-desc {
	font-size: 12px;
	line-height: 1.5
}
.contact__qr-box {
	width: 88px;
	height: 88px
}
.footer__inner {
	grid-template-columns: 1fr;
	gap: 32px
}
.footer__bar-inner {
	flex-direction: column;
	gap: 8px;
	text-align: center
}
.btn {
	padding: 14px 26px
}
.footer__inner {
	padding-bottom: 50px;
}
.footer__col {
	display: block;
}
}

/* 导航移动端展开 */
@media(max-width:1200px) {
.nav.active {
	display: flex;
	position: absolute;
	top: 78px;
	left: 0;
	width: 100%;
	/* right: 0; */
	flex-direction: column;
	background: #fff;
	padding: 14px 32px 24px;
	gap: 0;
	border-bottom: 1px solid var(--line);
	box-shadow: 0 20px 40px rgba(0,0,0,.08);
}
.nav.active .nav__link {
	padding: 14px 0;
	border-bottom: 1px solid var(--line)
}
.nav.active .nav__link::after {
	display: none
}
}